Hoping for more videos, [Stephen Colbert] threw down the gauntlet, announcing "Stephen Colbert's Green Screen Challenge." Already, a number of entries have been rolling in on YouTube, and linked at www.codebot.org/colbert.

One website has even created an "On Notice" generator (www.shipbrook.com/onnotice) where fans can replace Colbert's list of those who are "on notice" (grizzly bears, the British Empire), with whoever they choose.

Colbert's latest foray into viral video has been met with similar enthusiasm. Writing on the Huffington Post, blogger Rachel Sklar said Colbert's "savvy exploitation of the web... has proven again why (The Colbert Report) is one of the most cutting-edge shows on television."